I feel the air bubbles should give a tad more air, I felt I had to wait for a looong time at a bubble place before i had enough air to move on. It would be awesome if the tounge could do more than catch only flies though, like being able to get airbubbles with the tounge would be fantastic - though I must admit I did try to use it as a grappling hook too.
The artstyle is cosy and cute and the music feels like an epic underwater heist - this coupled with a smug lil frog makes for a nice game indeed :)